2007-06-02 10:42:43 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
709 hours
2007-06-02 10:52:33 · answer #1 · answered by MotherNature 5 · 0⤊ 1⤋
The moon completes one full orbit of the Earth in approximately 27.32 days (one sidereal month). During that time, the relative position of the sun in the sky has changed though, so the moon actually has to move further than one whole orbit for it's cycle of phases to repeat. That cycle is called a lunation, or a synodic month, and lasts between 29.27 and 29.83 days (29.53 days on average). I really don't know where everyone gets this 28 days thing, nothing about the moon takes 28 days. The closest thing is the anomalistic month (time between passages at perigee) which is 27.55 days.
2007-06-02 19:50:45 · answer #2 · answered by Arkalius 5 · 0⤊ 1⤋
If motion is viewed above it from a star the moon takes one sidereal month to do a complete cycle about the earth.
2007-06-02 17:54:17 · answer #3 · answered by goring 6 · 0⤊ 1⤋
about 28 days.
2007-06-03 05:48:07 · answer #4 · answered by neutron 2 · 0⤊ 1⤋
One Lunar month, +-28.6 Earth Days
2007-06-02 17:51:19 · answer #5 · answered by Anonymous · 0⤊ 1⤋
approximately 28 days
2007-06-02 17:46:06 · answer #6 · answered by jcnielson 2 · 0⤊ 1⤋
From full moon to full moon . . . one month, approximately 28 days.
2007-06-02 17:53:09 · answer #7 · answered by Old Truth Traveler 3 · 0⤊ 1⤋
28 days..
2007-06-02 18:51:10 · answer #8 · answered by Dr. Eddie 6 · 0⤊ 1⤋
28.4 Earth days - about a month
2007-06-02 18:04:41 · answer #9 · answered by M&M 5 · 0⤊ 1⤋
one lunar month, 28.4 days
2007-06-02 17:50:38 · answer #10 · answered by Lorenzo Steed 7 · 0⤊ 1⤋